Heel-grooving machine.



' G. M. HALL.

Hm (mom/me MACHINE! APPLICATION FILED MAYlfi l I916.

.Patmed m. 5,1918% 4 SHEETS-SHEET I.

I o o 0 9 0 0 0 Witnesses e. M. HALL. HE EL GROOI/ING MACHINE- APPLICATION FILED MAY 25. I916.

Inventor Witnesses Attorneys 6. IV]. VHALL.

HEEL GROOVING MACHINE. 7 APPLICATION FILED MAY 25, 1M6.

' Patented Feb. 5,1918.

4 SHEETSSHEET 3.

Witnesses Attorneys G. M. HALL.

HEEL GROOVING MACHINE.

APPLICATION FILED MAY 25'. i916.

. 4 SHEET$-SHEET m Witnesses Inventor Patented Feb. 5, 19118.

GRANT M. HALL, OF KEENE, NEW HAMPSHIRE.

HEEL-GROOVING MACHINE.

me ias.

Specification of Letters Patent.

Patented Feb. 5, 191%.

Application filed May 25, 1916. Serial No. 99,892.

To all whom it may concern:

Be it known that I, GRANT M. HALL, a citizen of the United States, residing at Keene, in the county .of Cheshire and State of New Hampshire, have invented a new and useful Heel-Grooving Machine, of which the following is a specification.

The object of the invention is to provide a machine for facilitating the expeditious and accurate routing or grooving of wood heels or heelsin which the foundation is of wood or similar material, and to provide for the accomplishment of this object at a minimum risk to the operator.

Furtherobjects of the invention will appear in the following description, it being understood that various changes in the form,

proportions and details of the construction illustrated may be resorted to within the scope of the claims, without departing from the spirit of the invention.

In the drawings showing one embodiment of the invention,

Figure 1 is a side view.

Fig. 2 is a similar view 'from the opposite side.

Fig. 3 is an end view.

Fig. tis a detail perspective view of one of the blank rests or lags with the backing block removed.

Fig. 5 is an inverted perspective view of a portion of the blank holder.

Fig. 6 Sho s a blank after the first operation of routing.

Fig. 7 shows the same and a further step in the operation.

The machine comprises a rotary cutter head 10, and a carrier 11 which includes an endless chain 12 mounted in a runway consisting of side members 13. The chain 12 is provided with rests 14: upon which the blanks 15 are adapted to be positioned successively to be conveyed by the chain 12 into the field of the cutter head 10 and thence beyond the same to be delivered or discharged. In order to insure the proper positioning of the blank 15 upon the rest 14 as the latter is approaching the cutter head 10, a lateral guide 16 is positioned on the frame with one edge parallel with the path of the chain 12, and the rest let is provided with a rear abutment 17 with which may be associated a backingup block 18, held in place by a spring dog 19 or the equivalent thereof. The seat or bearing surface of the rest 14 is provided with sharpened transverse keys 20 designed to engage in the blank 15 to lncreasethe steadiness thereof during its conveyance by the carrier chain 12. The

.block 18 preferably is made of wood .nd

weighted to give it the desired yielding pres-- sure upon the blank, and as the latter moves forward. this foot exerts a dragging and therefore steadying force which is continued until the blank comes into engagement with a holder 23 mounted for vertical movement in a frame plate 24, by means of. bevel or dovetail guides. or the equivalents thereof, said holder having a shoulder 25 which over hangs the nose 26 of the presser foot 21. A weighted lever 27 maybe employed to give the desired pressure to the holder 23, and the latter is provided at its lower edge with a sharpened engaging blade 28, shown in detail in Fig. 5 and preferably consisting of a hard metal plate grooved upon its operative edge to provide sharpened knives. l/Vhile the block 18 and the abutment 17 on the rest 14. supplemented by the transverse keys 20 provide for a positive forward movement of the blank 15, the latter being steadied and subjected to a restraining pressure by the action of the presser foot 21, and being held from lateral displacement by the guide 16, the engagement of the holder 23 i with the blank serves to lock the blank securely in place, and hence the blank is pre-' sented to the cutter head 10 with accuracy and is conveyed through the field of the cutter'head under conditions insuring uniformity ofthe product. Also cooperating with the lateral guide 16 is.a circular saw 280 and in order that the relation between the plane of the saw and the operative edge of the guide, and the path of the carrier chain 12 may be adjusted to conform with the various requirements, the bearings of the saw' arbor are carried by a transversely adjustable bed plate 29 suitably mounted in guides of the undercutor dovetailed type in the frame of the machine, while the guide 16 is carried by a secondary bed plate 30 similarly guided upon the bed plate 29 and adapted for adjustment with the bed plate of the axispf said spindle or arbor. A feed or independently thereof as may be necessary.

Any suitable supporting devices may be provided for the mechanism, the drawings illustrating a main base 31 surmounted by a supplemental or super-base 32 to which the members 13 of the carrier runway are secured, while the frame plate 24 on which the holder 23 is mounted may be supported by suitable standards 33. s

In order that the cutter head 10 may be adjusted to suit the path traversed by the blanks 15 conveyed by the carrier chain 12, and also to suit varying conditions of work and o'peration, the spindle or arbor 34 of the cutter head is mounted in bearings 35 and 36, with its lower extremity in contact with a stop screw 37, said bearings being supported by a plate 38 which is mounte in suitably dovetailed or similar guides for adjustment axially of the cutter head spindle or arbor 34, in a. second plate 39 which is mounted in the frame of the machine in suitable horizontal guides of the dovetail or analogous type for adjustment transversely screw40 serves as a means for adjusting and holding the horizontally adjustable plate 39 in position to locate the cutter head 10 at the desired distance laterally or horizontally from the path of the blanks 15 conveyed by the carrier chain 12. A feed screw 41, mounted in a lug-42 on the plate 39 and engaging a threaded aperture in a lug 43 on the vertically adjustable plate 38, serves as a means for adjusting the latter in a direction parallel with the axis of the cutter head spindle or arbor 34 and hence properly positioning the cutter head 10 vertically with reference to the path of the blanks 15.

A drive shaft 44 having a pulley 45 carries a sprocket 46 connected by a chain 47 with a sprocket 48 on a shaft 49 serving to operate the carrier chain 12 through chain gears 50, and a suitable takeup 51 may be employed to secure the desired tension of the chains 47 and 12.

The spindle or arbor 34 of the cutter head 10 may be provided with a driving pulley 52 to which motion may be communicated by any suitable or convenient means. The saw 280 forms the straight edge E of Fig. 6 before the cutter head 10 forms the groove G of the said. figure. This operation prevents the formation of a rough edge at D, due to the action of the cutter head 10. In this connection it is to be observed that the plate 29; and consequently the saw 280, may be adjusted to engage the blank 15 at any desired point,'or not to engage the blank at all, at the will of an operator.

\Vhat is claimed is 1. In a heel routing machine, a rotary eutter, an endless carrier traversing a path adjacent to the cutter and provided with blank rests on lags having transverse sharpened blank engaging keys a stationary lateral guide having an operative edge parallel with the path of the earrier,ayielding presser foot for engagement with the upper side of the blank for holding the same firmly in con-- tact with the rest or lag, a yielding blank holder having a sharpened blank engaging edge parallel with the path of the carrier,

and means for operating said parts.

2. In a heel routing machine, a rotary cutter; a carrier traversing a path adjacent to the cutter and provided with blank supporting means; a grooving saw operating in a plane substantially at right angles to the plane in which the cutter operates; means for adjusting the saw transversely of the path traversed by the carrier; and means for ad usting the cutter in a direction sub- .stantially at right angles to the direction of adjustment of the saw, whereby a portion of the cutter may operate beyond the periphery of the saw.

3. In a heel routing machine, a rotary cutter; an endless carrier traversing a path adjacent the cutter and provided with a blank-rest having an abutment; a removable backing block carried by the rest and engaging the abutment; and adatch member carried by the abutment and engaging the block. A

In testimony that I claim the foregone; as my own, I have hereto affixed my signature in the presence of two witnesses.

GRANT M. HALL.

\Vitnesses G. H. SHEEN, ORNLTO E. CAIN. 

